Did a full melee party with 3 LYN monks (RoG, Feedoe, tlts) recently and tlts was able to record this SK + Kulle kill (MP10) in 2.48. First blow 0.07 and last hit 2.55... efficient time IMO for a party without much crowd control element.
Another party with RoG, tlts & Vierge. SB-Kulle: First blow 0:09, last blow 2:30 and recorded 2:21, beat the previous all melee party by 27 seconds margin by having a DH